Polymaker Polydryer Filament Storage Box
4.4Editor score
Sealed storage design
Built-in hygrometer
Compatible with most filaments
In this guide
Filament dryer boxes are essential tools for anyone serious about 3D printing quality. These devices remove moisture from spools, preventing print defects like stringing and bubbling that ruin projects.
We compared ten leading models based on heating speed, capacity, temperature range, and user feedback. Each option offers unique features to suit different budgets and printing needs.
Every pick highlights key specs and real-world performance. Prices fluctuate frequently so check current listings before buying to ensure you get the best deal available today.
Top 3 Picks for Best Filament Dryer Box
Creality Filament Dryer Box 4 Spools
4.6Editor score
Dual heating chambers
85°C max temperature
4 spool capacity
Official Creality Filament Dryer Space Pi X4
4.6Editor score
Independent temp control
Energy efficient modes
High capacity storage
Top 10 Best Filament Dryer Box in 2026 Compared
The table below provides a side-by-side look at all ten models. Compare specs like capacity, max temperature, and special features to find the right fit for your printer.
ProductsSpecificationsEditor scorePrice
Best Budget
SUNLU Filament Dryer Box 2026 New Upgrade S1 Plus
Fan assisted drying
LCD display
55°C max temp
Single spool
4.3Editor score
Editor's Choice
Creality Filament Dryer Box 4 Spools Space Pi X4
Dual chambers
85°C max temp
4 spool capacity
Touch UI
4.6Editor score
Best Premium
Comgrow 3D Printer Filament Dryer Box SH01
2 spool storage
50°C max temp
Silicone outlet
2 inch LCD
4.4Editor score
Polymaker Polydryer Filament Storage Box
No heating
Sealed storage
Hygrometer
1kg spool
4.4Editor score
SUNLU Filament Dryer S2
Translucent lid
70°C max temp
Large capacity
Touch screen
4.3Editor score
Comgrow Filament Dryer Box SH02
360 PTC heater
70°C max temp
2 spool capacity
Safety alarm
4.4Editor score
2026 New Creality Space PI Filament Dryer
3.7 inch screen
70°C max temp
12 filament presets
Power off memory
4.4Editor score
2026 New Creality Space PI Filament Dryer Plus
Dual spool
70°C max temp
Humidity monitor
360 heating
4.4Editor score
Creality Filament Dryer Box 4 Spools Space Pi X4L
Dual chambers
75°C max temp
4 spool capacity
Illuminated window
4.5Editor score
Official Creality Filament Dryer Space Pi X4
Dual 200W heaters
85°C max temp
4 spool capacity
Energy saving
4.6Editor score
1. Creality Filament Dryer Box 4 Spools – Best Overall Filament Dryer Box
Creality Filament Dryer Box 4 Spools
Dual 200W heaters
85°C max temp
4 spool storage
Touch UI display
The Creality Space Pi X4 is a powerful dryer for serious printers needing speed and capacity. It holds 4 spools and uses dual heaters to reach 85°C quickly. This model ranks highly for its efficiency in removing moisture.
Pros
- Dries 30% faster
- Independent heating chambers
- Large capacity storage
- Silicone sealed design
- Touch UI interface
Cons
- Higher price point
- Large footprint
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Dual 200W heating chambers allow for faster drying than single heater units. You can run two printers simultaneously. The silicone sealed enclosure keeps humidity out during pauses. Touch UI simplifies temp control.
While efficient, the size is substantial and price reflects premium features. Some users find the footprint large for small desks. The cost is justified by the time saved and improved print consistency over time.
Buy this if you use engineering filaments or print multiple projects. It protects investments in expensive spools. The dual chamber design offers flexibility unmatched by standard boxes.
Dual Heating Chamber Advantage
Independent chambers allow drying different filament types at different temps simultaneously.
Engineering Filament Support
85°C max temp handles PC, ASA, and PA materials effectively.
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2. Official Creality Filament Dryer Space Pi X4 – Best Premium Filament Dryer Box
Official Creality Filament Dryer Space Pi X4
200W dual heaters
85°C max temp
Single or dual mode
RFID compatible trays
The official Space Pi X4 offers top-tier performance with dual independent heaters. It reaches 85°C, essential for engineering materials like PAHT and PC. Users appreciate the ability to switch modes.
Pros
- Energy efficient modes
- High temperature capability
- Independent chamber control
- Four spool capacity
- Power saving options
Cons
- Requires specific trays
- Premium pricing
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Dual independent heating chambers let you customize temps for different filament types. The 200W heaters warm up fast. You can choose single chamber mode to save energy. This flexibility reduces waste.
Note that it works best with Creality trays. If using other trays check heat resistance. The price is high but justified for pros printing with advanced materials regularly.
This is the best choice for high-volume professional setups. The energy savings offset the cost over time. It ensures consistent results across multiple printers.
Energy Efficient Operation
Single chamber mode saves up to 40% energy compared to dual operation.
Advanced Material Handling
Reaches 85°C for tough materials like PC and ASA easily.
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3. Polymaker Polydryer Filament Storage Box – Best Budget Filament Dryer Box
Polymaker Polydryer Filament Storage Box
Sealed enclosure
Built-in hygrometer
No heating element
1kg spool fit
The Polymaker Polydryer is a passive storage solution perfect for maintaining dryness. It seals out humidity with an airtight design. Unlike other boxes it does not heat filament actively.
Pros
- Very affordable
- Sealed moisture protection
- Hygrometer included
- Print without opening
- Easy to use
Cons
- No active drying
- Desiccant required
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A built-in hygrometer lets you monitor conditions easily. The sealed design prevents re-absorption. You can feed filament without breaking the seal. This keeps filament dry between jobs cheaply.
Lack of heating means it cannot revive wet filament. It maintains dry conditions rather than drying. This trade-off lowers cost and complexity significantly for basic users.
Buy this for long-term storage of dry spools. It fits small budgets and workspaces. Pair with silica gel for best results in humid areas.
Passive Protection Design
Sealed storage prevents moisture re-absorption during printing pauses.
Monitoring Capability
Hygrometer helps avoid guessing about humidity levels.
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4. SUNLU Filament Dryer Box 2026 S1 Plus – Best Fast Drying Filament Dryer Box
SUNLU Filament Dryer Box 2026 S1 Plus
Fan assisted drying
LCD display
55°C max temp
Fast discharge
The SUNLU S1 Plus uses a fan to speed up moisture discharge. This helps reduce drying time for common filaments like PLA. It offers clear LCD displays for temps and times.
Pros
- Fan speeds drying
- Visual temp display
- Affordable price
- Compatible with all filaments
- Adjustable settings
Cons
- Temp limited to 55°C
- Single spool
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Fan design aids in moving hot air efficiently. The LCD screen shows real-time humidity. Adjustable settings allow customization per filament. Price point is accessible for beginners.
Max temp is limited to 55°C which excludes high-heat materials. Only holds one spool at a time. This limits utility for heavy users but works for hobbyists.
Ideal for those needing faster drying cycles. It balances features and cost well. Great for PLA and PETG users on a budget.
Fan Assisted Technology
Upgraded fan design speeds up water discharge from filament.
Visual Monitoring
2-inch LCD accurately displays time and humidity.
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5. SUNLU Filament Dryer S2 – High Capacity Filament Dryer Box
SUNLU Filament Dryer S2
70°C max temp
Translucent lid
Large capacity
0-99 hours timer
The SUNLU S2 stands out for its large capacity and temp range. It reaches 70°C. A translucent lid allows checking filament without opening. Spindle ensures even drying.
Pros
- Large spool capacity
- 70°C max temp
- Translucent lid view
- Long timer
- Spindle ensures even drying
Cons
- Heavy unit
- Basic interface
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Capacity fits larger spools easily. You can set timers up to 99 hours. This helps revive damp filament overnight. Good for mixed material environments.
Interface is simple but lacks advanced presets. Weight makes it less portable. Still effective for consistent drying results over time.
Buy for those needing high temp and volume. It fits well into workshops. Reliable for standard to high-temperature materials.
Large Capacity Design
Dimensions allow fit for large spools without issues.
Even Drying Mechanism
Spindle spins filament continuously for uniform heat.
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6. Comgrow Filament Dryer Box SH02 – Best Touch Screen Filament Dryer Box
Comgrow Filament Dryer Box SH02
360 PTC heater
70°C max temp
Safety alarm
2 spool capacity
The Comgrow SH02 uses 360 PTC heating for even results. A fan circulates hot air efficiently. It includes one-key presets for common filaments. Touch screen adds convenience.
Pros
- Fan circulation
- One key presets
- Touch screen
- Safety cut-off
- Sealed design
Cons
- Alarm can be loud
- Plastic build
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Safety features include auto cut-off at 130°C. Fan alarm prevents overheating. Sealed design maintains dryness. Fits 2 spools comfortably.
Build is plastic and may dent. Loud alarm can be annoying. Still offers good safety and ease of use.
Buy for safety and user-friendly controls. Good for beginners wanting protection. Handles common filaments well.
360 Heating
PTC heater and fan ensure uniform heat distribution.
Safety Features
Auto cut-off and alarm protect against overheating.
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7. Comgrow 3D Printer Filament Dryer Box SH01 – Best Simple Filament Dryer Box
Comgrow 3D Printer Filament Dryer Box SH01
50°C max temp
Silicone outlet
2 inch LCD
2 spool storage
The Comgrow SH01 keeps filament dry with sealed design. Temp limited to 50°C. 2-inch LCD shows info. Dual spool fit for medium needs.
Pros
- Sealed outlet
- LCD monitor
- Simple operation
- Dual spool
- Affordable
Cons
- Low max temp
- Auto shut-off
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Silicone outlet prevents moisture entering. Works well for PLA. Auto shut-off after 3 mins if idle. Prevents waste.
Low temp limits use. Interface is basic. Good for entry level.
Buy for basic storage and drying. Safe for kids. Good for standard materials.
Simple Operation
Touch buttons make setup quick and easy.
Dual Storage
Fits two spools for multiple print jobs.
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8. Creality Space PI Filament Dryer – Best Preset Filament Dryer Box
Creality Space PI Filament Dryer
12 filament presets
3.7 inch touch
70°C max temp
Power-off memory
The Creality Space PI offers 12 presets for different materials. 3.7-inch touch makes setup easy. Power-off memory saves settings. 360 heating ensures uniform results.
Pros
- 12 presets
- High resolution touch
- Power-off memory
- 48 hour timer
- 360 heating
Cons
- Heavier than budget
- Requires power
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48-hour timer helps long jobs. Handles composites like PA-CF well. Memory saves settings after outages.
Price higher than basic models. Still offers better features. Good for varied printing.
Buy for presets and memory. Saves time daily. Ideal for pros.
Preset Convenience
One-key sets for 12 filaments instantly.
Memory Function
Recall previous settings after power loss.
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9. Creality Space PI Filament Dryer Plus – Best Dual Spool Filament Dryer Box
Creality Space PI Filament Dryer Plus
Humidity monitor
70°C max temp
360 heating
Dual spool
The Plus version monitors humidity real-time. 360 heating for uniformity. Dual spool for efficiency. Good for mixed environments.
Pros
- Real-time humidity
- 360 heating
- Dual spool
- Easy touch
- Good presets
Cons
- Limited temp
- Price
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Humidity monitor prevents guessing. Dual spool saves space. Presets simplify setup. Touch screen is clear.
Temp limited to 70°C. Price reflects features. Good for pros.
Buy for monitoring and capacity. Saves time. Ideal for varied projects.
Real-Time Monitoring
Track humidity accurately during drying.
Efficiency
Dual spool fits multiple jobs.
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10. Creality Space Pi X4L Filament Storage – Best Large Capacity Filament Dryer Box
Creality Space Pi X4L Filament Storage
75°C max temp
Dual chambers
4 spool capacity
Illuminated window
The X4L offers 4 spool capacity. Illuminated window helps check. Dual chambers speed drying. 75°C for most materials.
Pros
- Illuminated window
- Dual chambers
- 4 spool capacity
- Rapid drying
- High temp
Cons
- High price
- Large size
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Window allows view without opening. Dual chambers help speed. 4 spool saves time. Good for bulk.
Large footprint. Expensive. Worth it for high volume.
Buy for bulk and capacity. Ideal for studios. Saves time.
Illuminated Window
Check spools without breaking humidity control.
Capacity
Holds 4 spools for big projects.
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Buying Guide – How to Choose the Best Filament Dryer Box
Selecting the right box requires considering capacity, heating speed, and temperature range. These factors determine efficiency and filament protection.
Capacity and Spool Count
Choose based on how many spools you need to dry simultaneously. Single spool units suffice for hobbyists; multi-spool units fit pros.
Look for 4-spool units if you run multiple printers.
Temperature Range
Materials like PLA need lower temps while ABS and PA require higher. Ensure max temp meets your highest material needs.
Check if max temp reaches at least 70°C for versatility.
Heating Speed
Faster heating saves time. PTC heaters are more efficient than standard resistive heating elements.
Look for models with fan circulation for faster drying.
Control Interface
Touch screens and LCDs simplify setup. Some units offer presets for specific filaments.
Preset buttons save time if you change materials often.
Sealing Quality
Sealed designs prevent re-absorption during printing. Silicone outlets help maintain dryness.
Check for seals around the cable outlet and lid.
Safety Features
Look for auto shut-off or alarms. Overheat protection prevents fires.
Models with temperature cutoffs are safer for overnight use.
Power Efficiency
Dual chamber models may consume more energy but save time. Single chamber models are better for low power budgets.
Check power modes to save electricity during idle times.
Budget
Passive storage is cheapest while active dryers vary by features. High end units cost more but save filament waste.
Consider long term value over initial cost.
How to Use and Care for Your Filament Dryer Box
Start by placing the spool inside and threading the filament through the outlet hole. Ensure the seal is tight before powering on the device to prevent moisture leakage during operation.
Set the temperature according to your filament type using the manual or presets. Never exceed recommended temps to avoid warping or damaging your spool during the drying cycle.
After use, wipe the interior to remove dust and check seals for wear. Store in a cool dry place to maintain performance and longevity over time.
Frequently Asked Questions
How long should I dry my filament before printing?
Most filaments need 4 to 12 hours to fully dry. PLA and PETG dry faster than ABS or Nylon which need longer cycles.
Can a filament dryer box revive old damp filament?
Yes active dryers can restore damp filament. Passive models only maintain dryness. Check temps to ensure compatibility with your spools.
Do filament dryers work with 2.85mm spools?
Many models support both 1.75mm and 2.85mm diameters. Check product specs to confirm compatibility with your specific spool size.
Is a hygrometer necessary in a dryer box?
While not mandatory a hygrometer helps verify dryness. It removes guesswork ensuring your filament stays dry between jobs.
Can I dry multiple types of filament at once?
Dual chamber units allow different temps for different filaments simultaneously. Single chamber units should only dry one type at a time.
What happens if I exceed the max temperature?
Exceeding max temps can warp spools. Ensure your setting matches the material requirements. Always verify specs before running long cycles.
Final Thoughts on Choosing the Best Filament Dryer Box
The Creality Space Pi X4 leads for capacity and performance. For budget needs the Polymaker Polydryer offers essential protection.
Prioritize temp range and sealing based on your materials. Engineers need higher temps while hobbyists may prefer simple units.
Verify current pricing before purchase as deals change. Choosing the right unit improves print consistency and saves time.